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Fencer Vulns
medium 5.0

CVE-2021-25503 json

Improper input validation vulnerability in HDCP prior to SMR Nov-2021 Release 1 allows attackers to arbitrary code execution.

published 2021-11-05 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-12399

cvss
5.0
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.1%
EPSS 0.1% chance of exploitation in 30 days, percentile 1%
public exploits
0
none known

Summary

Improper input validation vulnerability in HDCP prior to SMR Nov-2021 Release 1 allows attackers to arbitrary code execution.

Patch / fix

  • Samsung Mobile Samsung Mobile Devices SMR Nov-2021 Release 1

Exploit prediction

0.12% chance of exploitation in the next 30 days, higher than 1% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 5.0 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:L
NVD 3.1 6.7 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 4.6 AV:L/AC:L/Au:N/C:P/I:P/A:P

Affected products

  • Samsung Mobile Samsung Mobile Devices

Classification

Weakness
  • CWE-20 Improper Input Validation

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.